In small bowl, with mixer at high speed, beat egg whites and cream of tartar until soft peaks form; gradually sprinkle in sugar, 2 tablespoons at a time, beating well after each addition until whites stand in stiff, glossy peaks. Beat in vanilla extract.

Place large star tube (about 1/2 inch in diameter) into large decorating bag. To make stripe effect, with artist's paintbrush, and using slightly less than 1/8 teaspoon of each food coloring paste, alternately brush 2 lengthwise stripes of red food coloring paste and 2 lengthwise stripes of green food coloring paste inside decorating bag. Carefully spoon meringue into decorating bag.

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